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Vitamin niacinamide (vitamin B5)

Niacinamide, a form of vitamin B3, is used as a nutritional supplement and skincare ingredient supporting cellular metabolism and skin barrier function.

Mineral or nutrientUpdated May 15, 2026
Health score+2.0
-5Good5

Water guidelines

Legal limit
Not specified
Health guideline
Not specified

Food and supplement guidelines

Legal limit
Not specified
Health guideline
Not specified

Risks

Low risk of irritation or sensitization at high topical levels, excessive oral intake may cause flushing

Benefits

Supports energy metabolism, skin barrier repair, and DNA repair

References

Waters containing Vitamin niacinamide (vitamin B5)

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